Automatic reversible motor.



J. MOKENNEY.

AUTOMATIC REVERSIBLE MOTOR.

Patented Dec. 16, 1913.

APPLICATION FILED JULYV', 1913.

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JOHN MCKENNEY, OF ANACONDA, MONTANA.

AUTOMATIC REVERSIBLE MOTOR.

Specification of Letters Patent. A

Patented Dec. Mi, 1943.

Application led July 7, 1913. Serial` No. 777,699.

To @ZZ 'whom t may concern:

. Be it known that I, JOHN MCKENNEY, of Anaconda, in the county ofDeerlodge and State of Montana, have invented certain new and usefulImprovements in Automatic Reversible Motors; and I hereby declare thatthe following is a full, clear, and exact description thereof, referencebeing had Yto the accompanying drawings, which form part of thisspecification.

This invention is an improvement'in rotary engines and motors and hasparticular reference to means for automatically reversing the engineafter a predetermined number of revo-lutions of the main shaft thereofin either direction. The invention provides a novel valve controllingmechanism by which the direction of rotation of the main engine shaft iscontrolled, and an engine equipped therewith is especially adaptable fordriving reciprocating parts of machines; such as planer beds, and `otherdevices. I also provide means. whereby the valve controlling mechanismcan be rendered inactive and allow the engine to run continuously ineither direction desired by the operator.

In the accompanying drawings I have illustrated apractical form of motorand valve ,reversing mechanism embodying the invention andA willdescribe same with reference thereto.

In said drawingsFigure l is a sectional elevation of a motor showing theworking chambers, pistons and ports, and valve chamber. Fig. 2 is anexterior view sho-wing the valve mechanism. Fio 3 is a similar viewshowing the parts 4in different position.

Fig. 4 is a detail edge view of F ig. 2.

The engine casing 1 may be of any suitable form and contains a workingchamber la within which is eccentrically 4located a rotary piston 2which is mounted on a shaft 2b. The piston is provided with four'equidistant radial slots 2 in which slots are slidably mounted abutments3; and the diametrically opposite abutments 3 are connected by rods 3awhich extend di ametrically through the piston, the connected abutmentsbeing so formed that the abutments will move in and out according to thecurvature of the outer wall of the chamber l and will always maintainpractically a fixed relation to each other. A

At the point where the piston 2 contacts with the outer wall ofthechamber 1a I preferably locate a packing 3c which will prevent shortcircuiting of fluid from one side of this packing to the other.

Communicating with the chamber la at opposite sides of the packing 3Care ports 4a, 4b which also communicate with a valve chamber 4, in whichchamber is mounted a slidable valve 5 whichA is adapted to establishcommunication between either ports 4a or 4b and the main outlet port 4c,according to the position of the. valve 5. When valve 5 establishescommunication between ports 4a, (or 4%) and port 4c it openscommunication between the other ports 4", (or 43,) and thev chamber 4.Fluid, such as steam, compressed air or water under pressure, isadmittedginto the chamber 4 and will flow for example through port 4binto chamber la and engage abutments 3 t-herein and force piston 2 torotate through cylinder to the left until iiuid can escape through port4fL to outlet 4. If the valve be shifted to the right fluid will passfrom chamber 4 through port. 4a to the chamber la and port 4b and thento the outlet 4c and the piston will rotate to the left,

The valve 5 as shown is provided with a rack 5a meshing with a segment6a on a shaft 6 which extends outside the valve chamber and is pro-videdwith operating arm 6"; to this arm 6b may be-connectcd a stud 6" to`which is pivotally connected the upper end of an actuating spring 9hereinafter referred to. The arm 6b may also have a stud 6d on its innerside which is adapted to engage with a catch 7d on the lever 7 when thearm is swung to the left, or with catch Ze when the arm is swung to theright. The lever 7 is pivoted to the frame as at 7a and is provided with'a -cam portion ,7c adapted to be alternately engagedby tripping pins8il on a gear 8 as hereinafter explained, and cause lever 7 to releasethe pin 6d.

The gear 8 is rotatably mounted on a stud 8c attached to the side oftheframe and it meshes with apinion 10 rotatably mounted on a"stud l()aattached to the frame, and this pinion 10 is fast t-o a gear l0b alsorotatably mounted on stud 10a; and gear 10b meshes with a pinion 2e onthe shaft 2b.

To the projecting end of the stud 10a may be ixedly attached the lowerend of the spring 9, which is preferably a leaf sprin and its upper endis engaged with the stu 6c on the arm 6b. The studs 8a are detachablyattached to the gear 8 in any suitable .mannen To the gear 8 is attacheda stud 8b \to each revolution of the gear 8, for example say 10), as thegear 8 rotates the stud 8* engages the spring 9 and begins to deflect vit to the right and continues to deflect. it

' until pin 8a comes into engagement with and raises lever 7sufficiently to cause catch 7d to release the stud 6d; as soon as thestud is disengaged spring 9 (which is then flexed) immediately swingsarm fil to the right and brings the stud 6d into engagement with catch7eon lever '7 Thismovement of the arm oscillates shaft 6 and throughsegment 6a slidesthe valve 5 to the right, cutting 0E communicationbetween Vthe chamber 4 and port 4b and establishing communicationbetween said chamber andv port 4a; and between port 4b and the dischargeport 4. This produces a reversal of-movement ofthe main piston;` andthis reverse movement continues vuntil in the'reverse rotation of gear 8the other v,stud 8"l engages spring 9 and moves itto the left, thefleXure of the spring increasing until pin 8a engages cam 7c andcausescat'ch 7d to release pin 6d, whereupon spring 9 throws the arm 6*back to the left, thereby shifting the valveto its first position andcausing the piston to turn in .the opposite direction. By this means thevalve is automatically shifted and the shift of the valve is effectedquickly. The number of rotations of the main piston in the intervalsbetween each shift lof the valve is determinable by proportioning thegears, and by the relative position of pin 8a. If it is desired to havethe engine run for any length of time in one direction only, the stud 8bcan be removed andthe valve will then remain in either position to whichit is shiftedby the operator.

What I claim is:

1. In combination, an engine, and a valve adapted to control the engine;with, a rock shaft and connections for operating the valve, a lever onsaid rock shaft, a spring connected with said lever adapted to throw itin either position, a rotary member adapted to engage the spring andflex same until it causes the shift of the valve; gearing for actuatingsaid member,

a catch for holding the valve locked in either position, and means onsaidro-tary member for disengaging the catch.

2. In combination, an engine, and a valve for controlling the engine;with y, a rock shaft and connect-ions' for actuating said valve, and alever on said rock shaft; with a rotary member beside said lever,gearing for operating said rotary member from the main engine shaft, aspring beside said member connectedwith said lever, and a stud on saidmember adapted to engage and flex said spring until the latter throwsthe lever and shifts the valve.

3. In combination, an engine, a valve for controlling the inlet of fluidto the engine, a rock'shaft and connections for actuating said valve,and 'a lever on said rock shaft; with a rotary member beside said lever,gearin for operating said rotary member from t e main engine shaft, aspring beside said member connected with said lever, a

stud on said member adapted to engage and v flex said spring until thelatter throws the lever and shifts ythe valve; a catch for` locking thelever to hold the valve in either eX- treme position, and means onsaidrotary member adapted to'release the catch to permit the spring toshift the lever.

4. In combination with an engine, and a valve adapted to control theinlet of fluid to the engine; arock-shaftand connections for operatingthe valve; a lever on said rock-shaft, a device connected with saidleverand adapted to throw said lever`in either position, a gear adjacent saiddevice, gearing for actuating said gear, and a stud on said ear adaptedto engage said device alternate y on opposite sides and'cause it toshift ythe valve.

5. In combination with an' engine, a valve chamber, and a valve in saidchamber,.a rock-shaft and connections for operating the valve, a leveronsaid rock-shaft, a -flatspring engaging said lever and adapted tothrow it in either position, and a rotary member adjacent said meansadapted to engage said 'spring alternately on opposite sides to cause itto shift the valve, and gearing for actuating` saidmember, substantiallyas described.

6. In combination, an engine, and a valve adaptedy to control the inletand outlet of fluid to the engine; a rock-shaft and connections foroperatingthe valve, and a lever on said rock-shaft; with a deviceadapted to throw said lever in either position, a rotary member adaptedto engage said device alternately on opposite sides and cause it toshift the valve; a catch for holding the valve i main valve. arock-shaftand connections for operating the valve, shaft, a spring connected withsaid lever adapted to throw said lever in either position, a rotarymember adapted to engage the springalternatelyon opposite sides and eXsame until it causes a snap shift of the Ealve, and gearing foractuating said memer. i

a lever on said rook-y ln testimony that l claim the foregoing as myown, l -afX my signature in presence of tWo Witnesses.

JHN MCKENNEY.

Witnesses:

lIRENE SUGRUE,

JOHN W. JAMES.

